Kristen Stewart admits to cheating on Robert Pattinson with Rupert Sanders

The Twilight Saga Breaking Dawn actress apologised to Robert for all the hurt she'd caused by having a fling with Rupert Sanders, her director on Snow White and The Huntsman. Speaking in the statement, Kristen said: "I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected.[See also: Kristen Stewart hits the stage with Robert Pattinson at the Teen Choice Awards 2012]

Kristen Stewart has admitted to cheating with her Snow White director Rupert Sanders

"This momentary indiscretion has jeopardised the most important thing in my life, the person I love and respect the most, Rob. "I love him, I love him, I'm so sorry," she added. Kristen Stewart's statement comes after Us Weekly claimed to have pictures of the 22-year-old actress and Rupert, 41, in a clinch.[See more: Robert Pattinson and Kristen Stewart have banter at Comic Con 2012]

Kristen Stewart apologised to Robert Pattinson in a heartfelt statement

The pair had been photographed together numerous times while promoting SWATH, including having dinner with other crew members in Berlin. Kristen, who is thought to have been dating Rob for three years, was last snapped with R-Pattz at Comic-Con just two weeks ago - where they looked happier than ever infront of the cameras.